Reconcile 2Checkout customers with Intacct customers

**Objective:** Compare 2Checkout customers matching `{customer-filter}` (an email, company or last name; default: the first 25 customers) with the Intacct customer list and report which are missing from Intacct or differ in details. Check at most `{max-customers}` customers (default 25).

**Step 1: Read 2Checkout customers**

Call `2checkout-get-customer` (2Checkout server). If `{customer-filter}` contains "@" use it as `email`; otherwise use it as `last-name.contains`, and if that returns nothing retry with `company.contains`. Set `max-records` to `{max-customers}`. Keep `customer-reference`, `email`, `company`, `first-name`, `last-name`, `city` and `country-code` for each.

**Step 2: Find each customer in Intacct**

For each 2Checkout customer call `intacct-get-customer` (Intacct server) with `customer-name.contains` set to the company, or to the last name when the company is empty. Match on `email` first (case-insensitive); fall back to a unique name match. If two or more Intacct customers match, list them and mark the customer ambiguous without choosing one.

**Step 3: Report**

Give a table with 2Checkout customer reference, name, email, Intacct `customer-id` and `status`, and a verdict: Matched, Missing in Intacct, Ambiguous, or Matched with differences (name the field: email, city, country).

**Rules & Guidelines:**

* `2checkout-get-customer` is on the 2Checkout server; `intacct-get-customer` is on the Intacct server.
* This prompt is read-only. Do not call `2checkout-customer-add`, `2checkout-customer-update`, `intacct-create-customer` or `intacct-update-customer`.
* 2Checkout identifies people by email; Intacct by customer id and company name. Never treat a name-only match as certain.

**Validation:**

* If 2Checkout returns no customers, say so and stop.
* If Intacct returns nothing for a customer, report it as Missing in Intacct and continue.
* Normalise case and surrounding spaces before comparing text.